Burglarproof blind



June 8. 1940- w. A. ROWL EY I 2,205,156

suaemnraoor' BLIND Filed Dec. 19, 1938 2 Sheets-Sheet 1 Inventor WILL/AM14.ROWLEY,

A ttomeys 111111113, 1940- w. A. ROWLEY 2,205,156

' aunemnraoor 5mm Filed Dec. 19, 1938 2 Sheets-Sheet 2 l o 6 o oInventor W/LH/IM A. Rowan,

A iiorneys Patented June is, 1940 UNITED STATES PATENT, orrics 2,205,156I noltcmrtmoor' BLIND William A. Rowley, Tampa, Fla. ApplicationDecember 19, 1938, Serial No. 246,705- 2 Claims. (c1. 189-62) Thisinvention. relates to new and useful improvements in'blinds, and moreparticularly to securing means whereby blinds will be made substantiallyburgiarproof.

The principal object of the present invention is to provide a blindsconstruction wherein latch means is employed for securing the slats ofthe blinds in a fixed position against being raised or.

lowered.

10 Another. important object of the invention is to provide a structureof the character stated which will be substantially fool-proof inconstruction and positive acting in operation,

Other objects and advantages of the invention 15 will becomeapparent'tothe reader of the following specification.

In the drawings I Figures! represents a side elevatlonal view showingthe blinds mounted in a window.

Figure- 2 is an enlarged fragmentary sectional view taken substantiallyon a line 22 of Figure 1. Y Figure 3 is a fragmentary 'verticalsectional Figure 4 is a fragmentary detailed sectional view takensubstantially on a line 4-4 of Figure 2, showing the latch barrel inunlatched position.

Figure 5' is a fragmentary-perspective. view showing one end of one ofthe slats. 3 Figure 6 is a plan-view of a-modifled form of slat unit.

Referring to. the drawings, wherein like nu-' merals designate likeparts, it can be seen, that the slats are denoted by the numeral 5.These 35 slats can be operated in the usual manner of Venetian blinds,which mechanism is not shown in' the drawings. However, the slats areindividually constructeddiiferent from the usual Venetian blind slatsinthat at each end of the slat i-is a pintle I extending therefrom andter minating in a ball head I.

. Guide and latch means in the form of an as- :sembly at each side ofthe window frame 9 is provided and each of these assemblies is'gener- 45ally referred to by'the numeral ll. Each assembly consists of achanneled column Ii preferably constructed ofspring sheet metal or othersuitable material which has its side portions IIYand i3 curved inwardlyto define the 50 narrow slot I4 and fromthis point the side walls extendinwardly in transverse curved shape with their inner edge portionsflared apart as at i5,

. and thus forming a tensional engagement for the latch barrel 16. Thislatch barrel is rotatable in the said embracement. The barrel I6 isformed with a longitudinally extending slot I! one edge portion of whichis serrated to provide the V-shaped teeth l8. Between the points of theteeth i8 and the opposed edge portion of the slot i1 is suflicientspaceto permit free passage 5 of the pins 1 at the ends of the slats 5.The ball heads 8 are located in the barrel i6. Obviously by swinging thehandle iii, the shank 20 of which extends under the lower end of thecolumn ii and is secured to the lower end of the barrel i6, 10 rotatesthe barrel i6 so that the tapered teeth il in moving toward or away fromthe slat pins 1, result in the turning of the slats, or the completedropping thereof as the desire maybe. The handle l9 and the barrel i8 isheld in the desired position by the engagement of the handle shank withthe ratchet teeth II at the lower edge of the colunm i I.

The pintles of the slats Ii may be integral as denoted by numeral 1 inFig. 5 or at the ends of a bar 5 secured to the slat 6" by means 5,

. with thepintles of reduced construction as denoted by 5 in Fig. 6.

While the foregoing specification sets forth the invention in specificterms, it is to he understood that numerous changes in the shape, sizeand materials may be resorted to without departing 'from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what isclaimed go -asnew is:

1. A blind structure comprising a plurality vof. slats each providedwith a pintle at each end thereof, a pair of hollow columns, one at eachside of the blind structure, said columns being vertically slottedtoreceivethe pintles, means on the inside of the columns operative toengage the pintles to prevent the pintles and their slats from verticalmovement, 'said means comprising a rotatable barrel in each of thecolumns, said barrels m being vertically slotted and each barrel formedalong one vertical edge portion with tapered teeth adapted to embracethe pintlesto hold the slats inpredetermined spaced relati said barrelsbeing rotatable to complete displace the teeth from the pintles topermitifouapsmg of the blind structure, said slats being rotated by the"edge portions of the teeth riding. against thepintles thereof as thebarrels are rotated, said barrels being adaptedto lock the-slats againstrotation by clamping the pintlesjthereof againstcertain edgepo'rtions'of the columns at their slots with the pintles'bearing in theo'rotche's' of the teeth.

2. A blind structure comprising a plurality of 5s tapered teeth adaptedto. embrace the pintles tohold the slats in predetermined spacedrelation, said barrels being rotatable to completely displace the teethfrom the plntles to permit collapsing of the blind structure, said slatsbeing rotated by the edge portions 01 the teeth riding against thepintles thereof as the barrels are ro tated, said barrels being adaptedto lock the slats I against rotation by clamping the pintles thereofagainst certain edge portions of the columns at their slots with thepintles bearing in the crutches of the teeth, and manual means forrotating the barrels andsetting the same at predetermined 10 degrees ofrotation.

- WILLIAM A. ROWLEY.

